Waist-to-Hip Ratio Calculator - WHO Risk Thresholds

Formula	waist ÷ hip
Men threshold	0.90
Women threshold	0.85
Measures	Fat distribution

What is Waist-to-Hip Ratio Calculator?

Waist-to-hip ratio compares the circumference of your waist to that of your hips. Where BMI measures overall size, this measures shape — and shape predicts health risk better than size alone, because fat stored around the abdomen is more metabolically active and more harmful than fat on the hips and thighs. The World Health Organization uses 0.90 for men and 0.85 for women as the point where risk starts to rise. The measurement is simple and needs only a tape. Combined with BMI, it gives a two-number view that separates 'how big' from 'where the fat sits'.

Common Uses for Waist-to-Hip Ratio Calculator

Assess abdominal fat risk with a single ratio
Add shape information that BMI cannot provide
Track fat distribution changes during weight loss
Screen for central obesity alongside waist circumference

Frequently Asked Questions

What is a healthy waist-to-hip ratio?

Below 0.90 for men and below 0.85 for women is generally considered low risk. Above 0.95 (men) or 0.90 (women) is high risk in WHO terms.

Why does abdominal fat matter more?

Visceral fat around the organs releases more inflammatory and metabolic signals than subcutaneous fat on the hips and thighs, so it is more strongly linked to cardiovascular and metabolic disease.

Where should I measure?

Waist at the narrowest point, usually just above the navel; hip at the widest point of the buttocks. Keep the tape level and not compressing the skin.